Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
71,799,891
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 348,099
2 instagram.com 132,404
3 x.com 75,627
4 linkedin.com 50,924
5 namu.wiki 36,260
6 facebook.com 34,572
7 google.com 32,853
8 youtube.com 31,763
9 legacy.com 26,768
10 britannica.com 21,109
11 reddit.com 17,197
12 dictionary.com 16,156
13 amazon.com 14,050
14 fandom.com 11,720
15 microsoft.com 10,044
16 wiktionary.org 9,133
17 tiktok.com 8,886
18 letterboxd.com 8,330
19 crunchbase.com 8,087
20 apple.com 6,970
21 yahoo.com 6,918
22 fifa.com 6,476
23 justwatch.com 5,887
24 rottentomatoes.com 5,856
25 quora.com 5,572
26 cambridge.org 5,533
27 shopee.co.id 5,410
28 forbes.com 4,953
29 epicgames.com 4,922
30 history.com 4,862
31 hbomax.com 4,817
32 time.is 4,790
33 wikiwand.com 4,681
34 espn.com 4,453
35 github.com 4,406
36 shopee.ph 4,280
37 billboard.com 4,236
38 dictionary.net 3,940
39 bbc.com 3,862
40 imdb.com 3,830
41 nhl.com 3,819
42 pornhub.com 3,758
43 pinterest.com 3,508
44 indeed.com 3,357
45 google.co.il 3,357
46 spotify.com 3,325
47 bing.com 3,270
48 independent.co.uk 3,171
49 genius.com 3,138
50 nih.gov 3,042
51 uk.com 2,990
52 xhamster.com 2,991
53 eo-paris.fr 2,876
54 bloomberg.com 2,874
55 bbc.co.uk 2,867
56 theguardian.com 2,865
57 house.gov 2,855
58 nfl.com 2,827
59 temu.com 2,799
60 netflix.com 2,785
61 reuters.com 2,714
62 thesaurus.com 2,639
63 radiofrance.fr 2,608
64 goodreads.com 2,593
65 televisionacademy.com 2,572
66 soundcloud.com 2,557
67 vocabulary.com 2,468
68 google.com.br 2,437
69 amazon.co.uk 2,420
70 hotels.com 2,418
71 trustpilot.com 2,407
72 famousbirthdays.com 2,390
73 ebay.com 2,350
74 amazon.fr 2,317
75 steampowered.com 2,307
76 the-independent.com 2,294
77 ca.gov 2,265
78 nytimes.com 2,231
79 rateyourmusic.com 2,188
80 gog.com 2,187
81 deel.com 2,185
82 gov.uk 2,139
83 zhihu.com 2,101
84 one-line.com 2,096
85 nba.com 2,089
86 delta.com 2,089
87 inc.com 2,087
88 itv.com 2,078
89 loc.gov 2,076
90 libri.de 2,055
91 aliexpress.com 2,044
92 stanford.edu 2,036
93 playstation.com 2,033
94 lyrics.com 2,028
95 merriam-webster.com 2,009
96 search.google 2,006
97 metacritic.com 2,004
98 researchgate.net 1,972
99 oclc.org 1,946
100 lemonde.fr 1,944
101+ 62,102 additional niche-specific domains in full dataset covering 70,647,402 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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